Influence of the B-site cation nature on crystal structure and magnetic properties of Ca2BMoO6 (B = Cr, La, Sm) double perovskite

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Abstract

Double perovskite-type oxide Ca2BMoO6 materials, where B = Cr, La and Sm, were prepared by the sol-gel auto-combustion method for the first time. The role of different B-site cations on their synthesis, structures, and magnetic properties was investigated. The synthesis progress was followed by the Fourier transform infrared spectroscopy and the samples’ structure was investigated by X-ray diffraction. The increase of the ionic radii B leads to the decrease of the t-value which reflects the structural distortion from the ideal cubic perovskite. Magnetization measurements were made with a SQUID magnetometer. All compounds are ferimagnetic and magnetic properties are indirectly influenced by the distortion degree of the lattice and disorder on the B/B’ positions

References

  • 1. Andreson, M. T., Greenwood, K.B., Taylor, G.A., Poppelmeier, K. R. B-cation arrangements in double perovskite. Progr. Solid State Chem. 1993, 22, 197-233.

  • 2. Kobayashi, K. I., Kimura, T., Sawada, H., Terakura, K., Tokura, Y. Roomtemperature en magnetoresistance in an oxide material with an ordered doubleperovskite structure. Nature. 1998, 395, 677-680.

  • 3. Chan, T. S., Liu, R. S, Guo, G. Y., Hu, S. F., Lin, J. G., Lee, J.-F., Jang, L.-Y. Chang, C.-R., Huang, C. Y. Structural, electrical and magnetic characterization of the double perovskites Sr2CrMO6 (M = Mo, W): B′ 4d-5d system. Solid State Commun. 2004, 131, 531-535.

  • 4. Tian, S. Z., Zhao, J. C., Qiao, C. D., Ji, X. L., Jiang, B. Z. Structure and properties of the ordered double perovskites Sr2MWO6 (M=Co, Ni) by sol-gel route. Mater. Lett. 2006, 60, 2747-2750.

  • 5. Choy, J.-H., Park, J.-H. Hong, S.-T., Kim, D.-K. Competition of covalency between CrIII-O and TaV-O bonds in the perovskites Ca2CrTaO6 and Sr2CrTaO6. J. Solid State Chem. 1994, 111, 370-379.

  • 6. Kanaiwa, Y., Wakeshima, M., Hinatsu, Y. Synthesis, crystal structure, and magnetic properties of ordered perovskites Sr2LnTaO6 (Ln = lanthanides). Mater. Res. Bull. 2002, 37, 1825-1836.

  • 7. Brunckova, H., Medvecky, Ľ., & Hvizdoš, P. Effect of substrate on phase formation and surface morphology of sol-gel lead-free KNbO3, NaNbO3 , and K0.5Na0.5NbO3 thin films. Chem. Pap. 2012, 66, 748-756.

  • 8. Wu, L. Y., Ma, J. M., Huang, H. B., Tian, R. F., Zheng, W. J., & Hsia, Y. F. Hydrothermal synthesis and 121Sb Mossbauer characterization of perovskitetype oxides:Ba2SbLnO6 (Ln = Pr, Nd, Sm, Eu). Mater. Charact. 2010, 61, 548-553.

  • 9. Jacobo, S. E. Novel method of synthesis for double perovskite Sr2FeMoO6. J. Mater. Sci, 2005, 40, 417-421.

  • 10. Blosi, M., Albonetti, S., Dondi, M., Costa, A. L., Ardit, M., & Cruciani, G. Sol-gel combustion synthesis of chromium doped yttrium aluminum perovskites. J. Sol-Gel Sci. Technol. 2009, 50, 449-455

  • 11. Lavat, A. E. & Baran, J. E. Synthesis and characterization of Ca2CoTaO6, a new monoclinically distorted double perovskite. Material Research, 2011, 14, 472-472.

  • 12. Lufaso, M. W & Woodward P.M. Prediction of the crystal structures of perovskites using the software program SPuDS. Acta Crystallographica Section, B. 2001, 57, 725-738.

  • 13. Lin, Q., Greenblatt, M. Caspi, El’ad N. Avdeev, M. Crystallographic and magnetic properties of CaLaMnMoO6 double perovskite, J. Solid State Chem. 2006, 179, 7 , 2086-2092.

  • 14. Munoz, A., Alonso, J. A., Casais, M. T., Martinez-Lope, M. J., Fernandez- Diaz, M. T. Crystal and magnetic structure of the complex oxides Sr2MnMoO6, Sr2MnWO6 and Ca2MnWO6: a neutron diffraction study. J. Phys. Condens. Mat. 2002, 14, 38, 8817-8830.

  • 15. Lavat, A. E., Baran, E. J. IR-spectroscopic characterization of A2BB’O6 perovskites. Vib. Spectrosc. A. 2003, 32, 167-174.

  • 16. Martinez-Lope, M. J., Alonso, J. A., Casais, M. T., Garcia-Hernandez, M., Pomjakushin, V. Preparation, structural study from neutron diffraction data and magnetism of the disordered perovskite Ca(Cr0.5Mo0.5)O3. J. Solid State Chem. 2006, 179 ,8, 2506-2510

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